Cause and control measure of shape defects of high strength steel SFB700 hot rolling strip
JIN Zhen- wei1,TENG Hong- bao2,ZHANG Chang- li1,LI Xiao- lin1
（1. Metallurgical Process Department, Research Institute of Technology, Shougang Group Corporation, Beijing 100043, China 2. Hot- rolling Department, Shougang Jingtang United Iron and Steel Co., Ltd., Tangshan 063200, Hebei, China）
Abstract：The cause of the formation of the wave shape defects on the edge of SFB700 hot rolling strip with the thickness of 3.0- 6.0 mm was analyzed, which was mainly controlled by the trend of wave shape on the edge finish rolling outlet and concerned with the inhomogeneous edge cooling of the strip after rolling. And the emergence of wave shape defects on the edge was decreased by optimizing the rolling strip shape control strategy, adjusting the water quantity difference on both sides and side spray angle in the cooling area. At the same time, a new temper process was used to eliminate the wave shape defects on the edge. Therefore, the occurrence rate of the wave shape defects on the edge of SFB700 was reduced significantly.
靳振伟，滕洪宝，张长利，李晓林. 高强钢SFB700热轧板形缺陷的成因及控制措施[J]. 中国冶金, 2018, 28(7): 50-53.
JIN Zhen- wei,TENG Hong- bao,ZHANG Chang- li,LI Xiao- lin. Cause and control measure of shape defects of high strength steel SFB700 hot rolling strip[J]. China Metallurgy, 2018, 28(7): 50-53.
2018, Vol. 28 
